Top Cyber Security Companies in London (208)
Optro (formerly AuditBoard) helps enterprises transform risk into opportunity, redefining GRC through an agentic system of action. More than 50% of the Fortune 500 trust Optro to elevate audit, risk, and compliance in addressing a new era of risk. Optro is top-rated by customers on G2 and was named a Leader in the 2025 Gartner® Magic Quadrant™ for Governance, Risk...
Optro's Top Stability & Growth Strengths
Strong Revenue Growth: Recent ARR milestones and record bookings are cited, indicating accelerating top-line momentum within a short timeframe.
Strong Market Position & Advantage: Multiple analyst designations as a Leader and broad large‑enterprise adoption point to durable competitive standing.
Innovation-Driven Growth: A rebrand centered on AI, rapid AI capability launches, and acquisitions (e.g., FairNow, Midship) signal an innovation engine driving expansion.
Identify & Manage Cyber Risks At Scale, with DynaRisk. Our mission at DynaRisk is to provide families and small and large businesses worldwide with the tools they need to face the increasing number of cyber threats. We offer a variety of easy-to-use cyber software solutions, along with cyber risk intelligence and helpline services, backed by our market-leading threat intelligence capabilities...
Get your system tested by world-class Strikers and start making cybersecurity part of your development cycle. Strike is a global cybersecurity platform that helps companies be protected by detecting and fixing vulnerabilities in their systems continuously. This is achieved by implementing Pentestings that combine top talent and technology. These tests are performed by Strikers, a global community of world-class ethical hackers...
As a collective of highly technical engineers and developers offering deep security expertise, Praetorian solves the toughest challenges faced by today’s leading organizations across an ever-evolving digital threat landscape. Our solutions enable clients to find, fix, stop, and ultimately solve cybersecurity problems across their entire enterprise and product portfolios. As trusted advisors, Praetorian helps organizations minimize overall information security risk...
EPAM (NYSE:EPAM) is a global leader in AI transformation engineering and integrated consulting, serving Forbes Global 2000 companies and ambitious startups. With over thirty years of expertise in custom software, product and platform engineering, EPAM empowers organizations to become AI-Native enterprises, driving measurable value from innovation and digital investments. Recognized by industry benchmarks and leading analysts as a leader in...
EPAM Systems's Top Stability & Growth Strengths
Strong Market Position & Advantage: Analyst and client recognitions position EPAM as a leader in digital engineering and AI-enabled transformation, including multiple IDC MarketScape leadership placements and a Gartner recognition for custom software development. Independent coverage likewise describes the firm as a leading provider in these segments, reinforcing a durable competitive footing.
Resilient & Sustainable Growth: Revenue continues to expand year over year in recent quarters and on a trailing-twelve-month basis, and management still guides to growth for the current year despite a tougher backdrop. The pace has moderated compared with the prior year, but the trajectory remains positive.
Innovation-Driven Growth: The company is leaning into AI-native services and is identified as a leader in AI transformation engineering alongside strengths in data modernization and software engineering. This innovation-led mix is presented as a key engine for future expansion.
Elemendar develops Artificial Intelligence which reads cyber threat reports (CTI) authored by humans and instantly translates them into industry-standard machine-readable and actionable data. This saves cyber analysts and security departments hours of work a day and removes the "vulnerability gap" created by delayed understanding of new and dangerous cyber threats. Selected for the Telecoms Council's Innovation Showcase (2020) Finalist for SC Magazine...
OryxAlign creates true alignment that delivers the right outcomes for all. By listening closely, adjusting along the way, and delivering to the highest standards, we align our client's ambitions with the technology they need to achieve them. We offer managed IT and cyber security, cloud and digital transformation, and tailored professional and consulting services. At our core lies an enduring commitment to...
Facia is a cutting-edge AI company specializing in facial recognition, liveness detection, and deepfake prevention. Our advanced biometric solutions provide real-time identity verification, helping businesses enhance security, prevent fraud, and streamline authentication processes.
As the number one anti-piracy provider, Friend MTS is the trusted cybersecurity partner of the biggest brands in media, sports, and entertainment. Our mission is to help content owners, broadcasters, and operators increase revenues by combating piracy and reducing the impact of illicit content distribution. Through Emmy Award-winning fingerprint-augmented content monitoring, forensic watermarking, industry-first server blocking, and legal enforcement, we...
Webbing is a global data MVNO that delivers innovative enterprise grade, global connectivity and IoT services. Our secured network of 600+ mobile carriers across more than 200 countries, ensures superior data connectivity between business, people and things wherever the device is located. Since our foundation in 2010, we have been developing revolutionary SIM technology, powerful management platforms and a robust...
Welcome to Focus Group. Established in 2003, we’re proud to be one of the UK’s leading independent providers of essential business technology. Here to take care of all your telecoms, IT and connectivity services. This means everything in one place, one point of contact and one bill to cover everything you need. SME or global enterprise business; public sector, service...
UST is a global digital transformation solutions provider. For more than 20 years, UST has worked side by side with the world’s best companies to make a real impact through transformation. Powered by technology, inspired by people and led by purpose, UST partners with their clients from design to operation. With deep domain expertise and a future-proof philosophy, UST embeds...
auticon is an award-winning international social enterprise providing tech consultancy and neuro-inclusion services to clients across industry and service sectors, and exclusively employing professional consultants on the autism spectrum. As a social enterprise our core mission is to promote neuro-diversity and significantly improve the employment prospects of autistic adults through: Providing high quality, supported, long term careers for skilled autistic adults. ...
Netcraft provides powerful phishing detection, cybercrime disruption and website takedown solutions to the world's largest organizations
BlackBerry (NYSE: BB; TSX: BB) provides intelligent security software and services to enterprises and governments around the world. The company secures more than 500M endpoints including 195M+ cars on the road today. Based in Waterloo, Ontario, the company leverages AI and machine learning to deliver innovative solutions in the areas of cybersecurity, safety and data privacy solutions, and is a...
Thrive is a leading provider of NextGen managed services designed to drive business outcomes through application enablement and optimization. The company’s Thrive5 Methodology utilizes a unique combination of its Application Performance Platform and strategic services to ensure each business application takes advantage of technology that enables peak performance, scale, and security. Hundreds of clients rely on Thrive to drive operational efficiencies,...
Thrive's Top Stability & Growth Strengths
Strong Market Position & Advantage: Thrive is positioned as a top-tier provider in the mid-market MSP/MSSP segment, reinforced by repeated placement on major industry lists and security-focused awards. The company’s reported scale in customers, end users, and devices managed supports the view that it competes with meaningful operational heft in its target band.
Market Expansion: The business is expanding its footprint through a sustained acquisition program, including multiple deals in 2025 that broaden geography and capabilities. Regional build-outs (including APAC leadership hires) further indicate an active push beyond its historical core markets.
Investor Backing & Capital Strength: A strategic investment from Berkshire Partners alongside Court Square is presented as funding to accelerate growth and strengthen market position. This backing, paired with continued platform spend, signals access to capital to support M&A and capability expansion.
Naq empowers SMEs in highly regulated industries across the UK and Europe to turn compliance into a competitive advantage. Our platform simplifies and automates cybersecurity, compliance, and due diligence, helping businesses meet the complex requirements set by their customers, regulators and the industries in which they operate. From GDPR and ISO27001 to NHS DSPT, we help SMEs easily navigate complex...
watchTowr is redefining External Attack Surface Management with its Continuous Automated Red Teaming platform, built by offensive security experts and backed by real-world vulnerability research. Critical infrastructure and Fortune 500 companies globally trust watchTowr to continuously validate and strengthen their security postures. If there’s a way to compromise an organization, the watchTowr Platform will find it.
Oscobo is a U.K.-based privacy search engine that helps its users protect their data from advertisers, hackers, and profiling.
Atos is a global leader in digital transformation with 110,000 employees and annual revenue of € 12 billion. European number one in Cybersecurity, Cloud and High-Performance Computing, the Group provides tailored end-to-end solutions for all industries in 73 countries. Pioneer in decarbonization services and products, Atos is committed to a secure and decarbonized digital for its clients. Atos operates under...
